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介绍了全空间场和半空间场瞬变电磁探测技术的原理和常用工作装置,结合某矿的水文地质概况和开采条件,对其1136、1138工作面采用地面瞬变电磁法进行了采空区积水和覆岩富水性勘查,并对1136工作面进行了矿井瞬变电磁探测,结果表明地面瞬变电磁和矿井瞬变电磁的探测结果较为一致,基本查明了异常区的位置、分布范围和积水情况。根据探测确定的异常目标区域,布置了22个钻孔,其中有16个钻孔出水,并证实2处低阻异常为砂岩含水体。
This paper introduces the principle and common working devices of the full-field and half-space transient electromagnetic detection technology. Combined with the hydrogeological conditions and mining conditions of a mine, the 1136 and 1138 working faces adopt the ground transient electromagnetic method to carry out the goaf Waterlogging and overburden water-rich exploration, and carried out mine transient electromagnetic detection on 1136 face. The results show that the detection results of ground transient electromagnetic and mine transient electromagnetic are consistent, and the location, distribution range and Water conditions. According to the anomalous target area determined by the exploration, 22 boreholes were drilled, of which 16 boreholes were educed and two low resistivity anomalies were confirmed as sandstone aquifer.